def ensureHtmlifier(blob, srcpath, treecfg, conn=None, dbpath=None):
global htmlifier_current_path
global htmlifier_current
if srcpath != htmlifier_current_path:
htmlifier_current_path = srcpath
if dbpath is None:
dbpath = srcpath
htmlifier_current = CxxHtmlifier(blob, dbpath, treecfg, conn)
htmlifier_current.tokenizer = CppTokenizer(dxr.readFile(srcpath))
return htmlifier_current
